1. Some all-in-one panels of Tuya do not support the display of this function. It is recommended to use Studio panel configuration or customized interface. For Studio panel operation instructions, please refer to the following link: https://developer.tuya.com/cn/docs/iot/panel? id=K9hzyyk6g4p3m
2. Please check whether the custom DP point is a reportable and deliverable type. If only the data type is reported by the MCU, the DP function point will not be displayed on the panel.